Describe the bug

Bug Report: ls -la command output not displaying for subdirectories

When using the ! prefix to run shell commands, ls -la returns an empty box with "No changes detected" instead of showing the actual file listing.

What works correctly:

 - !ls .github/instructions - displays files as expected
 - !ls -la .github - displays files as expected
 - !ls -1 .github/instructions/*.md - displays files as expected

What fails:

 - !ls -la .github/instructions - shows empty output

This suggests the issue is specifically with the -la flags when used on nested subdirectories.

Environment:

 - Copilot CLI version: 0.0.374
 - OS: macOS (Darwin)
 - Directory tested: .github/instructions (contains 10 .md files)

This appears to be a UI rendering issue rather than command execution failure.

Affected version

0.0.380 Commit: 39ff7b7

Steps to reproduce the behavior

 - Navigate to a directory with subdirectories containing files
 - Run: !ls -la .github/instructions
 - Observe empty output box or "No changes detected" message

Expected behavior

Expected behavior: Should display the detailed file listing with permissions, ownership, dates, etc.

Actual behavior: Empty box or "No changes detected" message appears, even though files exist in the directory.

Additional context

No response